<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>collapse</title>
    <script src="http://cdn.staticfile.org/vue/2.0.3/vue.js"></script>
    <style>
        .collapse-enter{
            max-height: 0;
        }
        .collapse-enter-active {
            max-height: 10rem;
            -webkit-transition: all .3s cubic-bezier(1.0, 0.5, 0.8, 1.0);
            transition: all .3s cubic-bezier(1.0, 0.5, 0.8, 1.0);
        }
        .collapse-leave {
            max-height: 10rem;
        }
        .collapse-leave-active {
            max-height: 0;
            -webkit-transition: all .3s cubic-bezier(1.0, 0.5, 0.8, 1.0);
            transition: all .3s cubic-bezier(1.0, 0.5, 0.8, 1.0);
        }
    </style>
</head>
<body>
    <div id="app">
        <h1 @click="detail = !detail">Title</h1>
        <transition name="collapse">
            <p v-show="detail">
                在纽约长岛的一家餐吧里有一只132岁的大龙虾。这只纽约最老的龙虾名叫Louie，重22磅（约20斤），20年来，它一直生活在一家餐吧里，餐吧主人Butch Yamali就像养了一只宠物一样，把它养在水族箱里。
            </p>
        </transition>
    </div>
    <script>
        new Vue({
            el: "#app",
            data: {
                detail: false
            }
        });
    </script>
</body>
</html>